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TH10 - Respiratory Movements and the Diaphragm

The tenth in our series on the thorax describes the Respiratory Movements and the Diaphragm.
See our website for accompanying diagrams






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EPA Issues Highly Anticipated Rule on HFC Phasedown

EPA issued a final rule establishing a comprehensive program to cap and phase down the production and consumption of climate-damaging HFCs in the United States.




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Arizona Opens First Phase of IRA Rebate Program

Initially, Arizona’s Efficiency Arizona program, in partnership with community action agencies, will focus on providing heat pumps through an a/c replacement program that addresses heat-relief emergencies and/or financial hardships.




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Infographic: 6 Deadly Facts About Indoor Air Quality

While exterior pollutants, such as smog and CO, may receive more attention, IAQ within a home can have serious effects on our physical and mental health, as well.




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Infographic: A Look at Proper Humidity

IAQ-conscious homeowners might be interested to know how humidification can preserve not only their health but the health of their home, too.




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Daikin Advances to Final Phase of Heat Pump Challenge

The Residential Cold Climate Heat Pump Technology Challenge aims to foster collaboration among manufacturers, utilities, and other stakeholders to develop next-generation heat-pump technology capable of delivering reliable and energy-efficient heating in extreme winter conditions.




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Loophole May Undercut Biden Proposal to Protect Workers From Heat

As extreme heat becomes more common, more of a spotlight is being put on worker safety, and a new app may be able to help.




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Three-Phase Power and Voltage Imbalances

In HVAC, we rarely need to have a deep understanding of electrical design. But there are a few cases where a little understanding can go a long way in identifying issues before they cause trouble, and that is the intent of this short article.




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Infographic: Live Chat Stats

Live chat can have a huge impact on your customer satisfaction rate.




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Phyxter: Parts App

This instant messaging system acts as a virtual business partner by curating a contact list of nearby wholesalers and sending a quote request to multiple suppliers at once.




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The Professor: A Toast to Decorative Spherical Ice

Homes, restaurants, bars, and businesses rely on clear, clean ice for many applications. Ice is considered a food source, and the water that makes the ice must be of good quality. Good quality water will produce a crystal-clear, hard piece of ice.




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2024 Top Women in HVAC: Thomasena Philen

I love fixing things. I always have. But what is super exciting to me is the frontier. This field is changing daily, and new technology is everywhere.




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Infographic: Report - 1 in 4 US Commercial Service Contractors Are Implementing AI

67% of contractors see digital transformation as important to their success.




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Infographic: HVAC Satellite Office

Each service vehicle is a technician's roaming office. It can be a source of added expense and risk, or it can be managed with resourse like GPS and data-based solutions for the safest and most profitable use. Here's a bird's-eye view of what one fleet management software company sees in its customers.




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Infographic: Right Turns: Mapping Fleet Safety

Azuga studied 3.6 million driver behavior datasets from its GPS fleet tracking devices over the first five months of 2019.




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Phononic: Cold Chain Fulfillment Solution

As a sustainable solution for grocery’s end-to-end cold chain fulfillment needs, Phononic's ACT 2000 features a proprietary thermoelectric-based cooling platform that eliminates refrigerants and HFCs while meeting demanding refrigerated and frozen cold chain needs.




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QA Graphics: Energy Dashboard

This product is integrated to help users work toward earning LEED requirements and other sustainability and accreditation and education agendas.




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Nortek Global HVAC Introduces 3-Phase Light Commercial Air Conditioner

Nortek Global HVAC has introduced a new three-phase electric/electric packaged cooling solution. The company said the Model P8SE delivers 14 SEER cooling in capacity ranges from 3 to 5 tons in even tonnages, making it an energy-efficient choice for strip malls, restaurants, and retail stores.




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Infographic: RTU Efficiency Standards

On Dec. 17, 2015, the U.S. Department of Energy (DOE) finalized new negotiated energy conservation standards for commercial air conditioners, heat pumps, and commercial warm-air furnaces, otherwise known as rooftop units (RTUs).




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For HVAC Companies, a Phantom Stock Plan Can Revolutionize Retention Packages

Learn how HVAC companies can increase retention by giving their employees a stake in the company’s success through phantom stock plans.




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PHCC Meeting Strengthens ‘Foundation for Success’

Plumbing-Heating-Cooling Contractors–National Association members from around the country gathered this month for educational sessions, networking, and industry awards.




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Episode 157: Hadoop with Philip Zeyliger

Philip Zeyliger of Cloudera discusses the Hadoop project with Robert Blumen. The conversation covers the emergence of large data problems, the Hadoop file system, map-reduce, and a look under the hood at how it all works. The listener will also learn where and how Hadoop is being used to process large data sets.




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Episode 194: Michael Hunger on Graph Databases

Recording Venue: Skype Guest: Michael Hunger Michael Hunger of Neo Technology, and a developer on the Neo4J database, joins Robert to discuss graph databases. Graph databases fall within the larger category of NoSQL databases but they are not primarily a solution to problems of scale. They differentiate themselves from RDBMS in offering a data model built […]




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SE-Radio Episode 247: Andrew Phillips on DevOps

Sven Johann talks with Andrew Phillips about DevOps. First, they try to define it. Then, they discuss its roots in agile operations, its relationship to lean development and continuous delivery, its goals, and how to get started. They proceed to system thinking and what “You build it, you run it” means for a system when developers have pager duty.

They continue with the diversity of DevOps requirements among companies and industries; copying ideas versus finding your own way; culture, mindset, and recommended practices; and the mandatory tool chain. They wrap up by discussing architectural styles that support DevOps and DevOps costs versus benefits.




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SE-Radio Episode 252: Christopher Meiklejohn on CRDTs

Robert Blumen talks to Christopher Meiklejohn about conflict-free replicated data types. The discussion covers consistency in distributed systems, CRDTs, and their use in NoSQL databases.




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SE-Radio Episode 264: James Phillips on Service Discovery

Charles Anderson talks with James Phillips about service discovery and Consul, an open-source service discovery tool. The discussion begins by defining what service discovery is, what data is stored in a service discovery tool, and some scenarios in which it’s used. Then they dive into some details about the components of a service discovery tool and how reliability is achieved as a distributed system. Finally, James discusses Consul, the functions it provides, and how to integrate it with existing applications, even if they use configuration files instead of a service discovery tool.




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SE-Radio-Episode-269-Phillip-Carter-on-F#

Eberhard Wolff talks with Phillip Carter about F# - a multi-paradigm programming language supporting object-oriented, imperative, and functional programming paradimgs. Its unique features make it especially fit for parallel programming or DSLs.




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SE-Radio Episode 292: Philipp Krenn on Elasticsearch

Phillipp Krenn talks with SE Radio’s Jeff Meyerson about Elasticsearch, a scalable search index. The conversation begins with a discussion of search, how it compares to database queries, and what an inverted index is. Phillipp introduces Wikipedia as an example that runs throughout the episode because Wikipedia uses Elasticsearch to power its full-text search. A discussion of Elasticsearch’s scalability ensues, including basic terminology and an explanation of other applications of Elasticsearch.




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SE-Radio Episode 346: Stephan Ewen on Streaming Architecture

Edaena Salinas talks with Stephen Ewen about streaming architecture. Stephen is one of the original creators of Apache Flink. Topics discussed: stream processing vs batch processing, architecture components of stream architectures, Apache Flink...




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SE-Radio Episode 349: Gary Rennie on Phoenix

Gary Rennie, a core contributor to Phoenix and Plug, discusses the Phoenix, a web framework for Elixir. Host Nate Black talks with Gary about the parts of Phoenix, writing a Phoenix application, and troubleshooting performance issues.




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Episode 392: Stephen Wolfram on Mathematica

Stephen Wolfram, creator of Mathematica and Wolfram Alpha discusses the wolfram language, the language behind both projects. Host Adam Gordon Bell spoke with Stephen Wolfram about computing, computational essays, building a language, notebook based...




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Episode 394: Chris McCord on Phoenix LiveView

Chris McCord, author of the Phoenix Framework and Programming Phoenix 1.4, discusses Phoenix's LiveView functionality to showcase the power or real-time applications without the need for writing a single line of JavaScript.




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Episode 426: Philip Kiely on Writing for Software Developers

Philip Kiely discusses his book Writing for Software Developers. Software development primarily involves writing code but strong written communication skills are critical. Technical comprehension is vital but solid written communication skills are also...




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Episode 439: JP Aumasson on Cryptography

JP Aumasson, author of Serious Cryptography, discusses cryptography, specifically how encryption and hashing work and underpin many security functions.




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Episode 463: Yaniv Tal on Web 3.0 and the Graph

Yaniv Tal discusses The Graph’s key features and also explains to user basics of blockchain infrastructure, Ethereum.




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Episode 520: John Ousterhout on A Philosophy of Software Design

John Ousterhout, professor of computer science at Stanford University, joined SE Radio host Jeff Doolittle for a conversation about his book, A Philosophy of Software Design. They discussed the history and ongoing challenges of software system design, especially the nature of complexity and the difficulties handling it. The conversation also explored various design concepts from the book, such as modularity, layering, abstraction, information hiding, maintainability, and readability.




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Episode 521: Phillip Mayhew on Test Automation in Gaming

Phillip Mayhew of GameDriver discusses test automation for games and game-like applications. Host Philip Winston spoke with Mayhew about the increasing role of test automation in modern game development, the impact on the QA role, how to run tests...




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Episode 530: Tanmai Gopal on GraphQL

Tanmai Gopal, CEO of Hasura.io, joined SE Radio host Jeff Doolittle for a conversation about GraphQL. They discussed the history and rationale behind the original conception of GraphQL, as well as some of the use cases it is best suited for...




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Episode 536: Ryan Magee on Software Engineering in Physics Research

Ryan Magee, postdoctoral scholar research associate at LIGO Laboratory – Caltech, joins host Jeff Doolittle for a conversation about how software is used by scientists in physics research. The episode begins with a discussion of gravitational waves...




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Episode 545: John deVadoss on Design Philosophies that Drive .NET/Azure

We talk with John deVadoss about the philosophies underlying the development of .NET and Azure software. We discuss the "Fiefdoms and Emissaries" concept of building loosely coupled systems, talk about strengths and drawbacks and how to build services...




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SE Radio 578: Ori Mankali on Secrets Management using Distributed Fragments Cryptography

In this episode, Ori Mankali, senior VP of engineering at cloud security startup Akeyless, speaks with SE Radio’s Nikhil Krishna about secrets management and the innovative use of distributed fragment cryptography (DFC). In the context of enterprise IT, 'secrets’ are crucial for authentication in providing access to internal applications and services. Ori describes the unique challenges of managing these sensitive data, particularly given the complexities of doing so on a large scale in substantial organizations. They discuss the necessity for a secure system for managing secrets, highlighting key features such as access policies, audit capabilities, and visualization tools. Ori introduces the concept of distributed fragment cryptography, which boosts security by ensuring that the entire secret is never known to any single entity. The episode explores encryption and decryption and the importance of key rotation, as they consider the challenges and potential solutions in secrets management.




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SE Radio 610: Phillip Carter on Observability for Large Language Models

Phillip Carter, Principal Product Manager at Honeycomb and open source software developer, talks with host Giovanni Asproni about observability for large language models (LLMs). The episode explores similarities and differences for observability with LLMs versus more conventional systems. Key topics include: how observability helps in testing parts of LLMs that aren't amenable to automated unit or integration testing; using observability to develop and refine the functionality provided by the LLM (observability-driven development); using observability to debug LLMs; and the importance of incremental development and delivery for LLMs and how observability facilitates both. Phillip also offers suggestions on how to get started with implementing observability for LLMs, as well as an overview of some of the technology's current limitations. This episode is sponsored by WorkOS.




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SE Radio 613: Shahar Binyamin on GraphQL Security

Shahar Binyamin, CEO and co-founder of Inigo, joins host Priyanka Raghavan to discuss GraphQL security. They begin with a look at the state of adoption of GraphQL and why it's so popular. From there, they consider why GraphQL security is important as they take a deep dive into a range of known security issues that have been exploited in GraphQL, including authentication, authorization, and denial of service attacks with references from the OWASP Top 10 API Security Risks. They discuss some mitigation strategies and methodologies for solving GraphQL security problems, and the show ends with discussion of Inigo and Shahar's top three recommendations for building safe GraphQL applications. Brought to you by IEEE Software and IEEE Computer Society.




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SE Radio 640: Jonathan Horvath on Physical Security

Jonathan Horvath of Z-bit discusses physical access control systems (PACS) with host Jeremy Jung. They start with an overview of PACS components and discuss the proprietary nature of the industry, the slow pace of migration to open standards, and why Windows is commonly used. Jonathan describes the security implications of moving from isolated networks to the cloud, as well as credential vulnerabilities, encryption using symmetric keys versus asymmetric keys, and the risks related to cloning credentials. They also consider several standards, including moving from Wiegand to the Open Supervised Device Protocol (OSDP), as well as the Public Key Open Credential (PKOC) standard, and the open source OSDP implementation that Jonathan authored.

Brought to you by IEEE Computer Society and IEEE Software magazine.




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A direct solution to the crystallography phase problem

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Physics Nobel nominees, 1901–70

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Philips Performance Wireless TAPH805BK Bluetooth Headset Review

The Philips Performance Wireless TAPH805BK are wireless headphones with battery life that will knock your socks off, but the sound quality has a lot of room for improvement.... [PCSTATS]